Hub and brake drum construction



July 10, 1934. G. E. PARKER HUB AND BRAKE DRUM CONSTRUCTION 2 Sheets-Sheet 1 Filed Feb. 18, 1932 lJuly 1o, 1934.

G. E. PARKER 1,965,989

HUB AND BRAKE DRUM CONSTRUCTION Filed Feb. 18, 1952 1 2 sheets-sheet 2 /z/ /f /17 l lI f I /J/ L Il! Il@ 4 /15 /zr 1 ,nl V Il" .Il I' v [if [4;

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Patented July 1o, 1934 d 1,965,989

UNITED STATES PATENTIol-FICE HUB A ND BRAKE DRUM CONSTRUCTION Guy E. Parker, Birmingham, Mich., assignor to General Motors Corporation, Detroit, Mich., a corporation of Delaware Application February 18, 1932, Serial 593,759

3 Claims. (Cl. 18o-75) This invention relates to wheels and more parring portionb 37 is formed with openings having ticularly to a wheel and brake drum assembly conical walls. Similarly shaped nuts 43 are for use on motor vehicles. threaded on driving studs 45 which studs pass An object of the invention isto provide an through openings provided therefor in the 5 improved combination of wheel and brake drum. flange 35. 60

Another Objectis to provide an improved means The brake drum is represented by numeral 47. to locate the brake drum in concentric relation It has a shoulder 49 adjacent the outer mar` to the wheel. ginal wall of part 15 of theouter wheel hub. The Another object is to provide a construction fainner hub portion of the drum is formed with cilitating the use of a`brake drum interchangea shoulder as at 51 whereby this portion of the 65 able for front and rear wheels. drum may be assembled over the outer surface Another object is to provide means for reof bearing race 30 and also engage the inner side taining a brake drum relative to an inner wheel thereof; This inner drum hub is provided with hub when the wheel with its outer hub is reopenings registering, when the drum is assemmoved. bled on the outer race 30, with the holes in the 70 Other objects and advantages will appear from inner wheel hub formed to receive the driving the following description. studs 45. These studs may be secured, vas by In the drawings accompanying this descripbeing threaded, into the brake drum as shown. tionl The extreme inner portion of the drum hub Fig. 1 is a transverse section through a driven is represented by numeral 60. It is there pro- 75 wheel embodying my invention. vided with a guard axially spaced from a suit- Fig. 2 is an enlarged sectional ,view showing able packing ring 55 to prevent the escape of the invention applied to a Wheel mounted on a lubricant from the 4region of the bearing. steering stub axle. To prevent the separation of the brake drum Fig. 3 is a section on line 3-3 of Fig. 2. 47 with the driving studs from the inner wheel 80 Fig. 4 is a transverse section of vmy invention hub 31 when the nuts 43 are removed for the applied to a modified form ofwheel, this ligure purpose of removing the wheel there are cap showing the invention associated with a driven screws 61 extending through the inner wheel hub wheel. flange at points symmetrically disposed and 30 v Fig. 5 is a transverse section showing the same located between the driving lugs as best shown 85 type of wheel and embodying Ymy invention by Fig. 3. These cap screws are threaded into mounted on a steering stub axle. thedrum hub ange as shown, andfor the sake Reference is first made to Figs. 1-3 inclusive. of reducing the weight of the inner hub the ma- A wheel of known kind-is shown as having a terial may be cut awayfrom the hub in the re- 35 rim 7, spokes 9, and an outer wheel hub 11. The gionvof the cap screws. It is not intended that 90 wheel hub 11 is formed from two parts 13 and these cap screws shall assume the drive, their 15 welded togetheras shown. The outer part only purpose being to hold the hub and inner 13 may be provided at its open end with a cap 17. drum assembled when the wheel is removed. It In the case of the driving wheel the live axle will be observed also that the heads of the cap 19 extends through and beyond its housing 21. screws are located beneath the portion 37 of the 95 Adjacent the end of the housing isa shoulder outer wheel hub when the parts are assembled. 23 receiving an inner race 27. This race, at its By the construction described it will be seen outer end, is held by a retainer and nut 25. The that the Wheel may be removed with n'o possibearing is completed by an outer race 30 and bility of the separation of the brake drum from the included balls 29.y Secured to the end of the inner wheel hub. The nuts 'on the driving 100 the driving axle is an inner hub 31 fastened by studs clamp the inner hub 35 between the ring a retainer and nut 33. The hub 31 is formed member 37' of the wheel., proper andthe brake with a ange 35 provided with a shoulder 36 drum hub. ,Preferably the brake drum` hub may whereby itengages the end of the outer race 30 be provided with a reduced portion to receive a and also engages a` part of the outer face of the gasket 62 between the said brake drum hub and 105 said outer race. At 37 is an inner ring constithe inner wheel hub 35. Since both the wheel tuting a portion of part 15 of the wheel. It is hub and the brake drum are assembled on the formed to overlie flange 35 and to be out of outer race the correct centering of the drum on contact therewith except in the circular regions the inner wheel is insured. of contact at 39 and 41. At spaced intervals the Figs. 2 and 3 show the same wheel and brake 110 drum mounted on a stub axle. The axle 63 supports, by means of bearings 65 and 67, the inner hub 69, the flange 71 of which axially engages and overlies the outer race of the bearing 65. The same brake drum 47 is associated with the flange 71 of the hub 69 in just the same way as was described in connection with Fig. 1. The driving studs 45 with the nuts 43 and the cap screws 61 are shown in this embodiment. Here again it will be seen that the brake drum flange is centered relative to the wheel hub by being assembled over the bearing race 70.

It will be readily understood that the use of similarly dimensioned bearings for the front and rear wheels permits the use of similarly dimensioned and interchangeable drums for both front and rear wheels, and that when assembled the drums will be in every case in correct position relative to the wheels. This is well shown in Figs. 4 and 5 which illustrate another kind of wheel, but with which my invention is employed. Here the live axle 101 is shown located in housing 103. The inner race 105 is held against a shoulder 107 by a retainer and a nut 109 threaded on the end of the housing. The inner wheel hub 111 is keyed to the live axle 101 at 113 and is held by a retainer and nut 115. The flange 117 engages the end of and the outer face of the outer race 119 of the bearing as before. The brake drum 121 is also assembled around the outer race 119 and also engages its inner end. There is provided a suitable packing 120 and guard 123 substantially as before, this guard being similarly associated with the inwardly directed end 125 of the brake drum.

A wheel hub 127 has secured thereto a ring 129. The driving studs are shown at 131 threaded into the drum hub. These studs pass freely through the inner hub 117 and receive nuts 133 which have conical faces in engagement with conical depressions formed in the ring 129. Cap screws, although not illustrated in these figures, alternate with the studs 131 as in the other form of the invention. This type of wheel is shown in Fig. 5 on a stub axle. The same wheel and drum may be employed inasmuch as the outer race 135 corresponds in dimensions with the outer race 119 of the bearing used on the axle housing as shown in Fig. 4. In this form of the invention the outer Ibearing 139 obviously cooperates with the inner bearing 137 in rotatably supporting the inner hub 141 to which is threaded the hub cap 143. In

other respects the construction is the same and will be seen to embody the same advantages.

I claim:

1. In combination, a support, an inner wheel hub having a flange, an outer wheel hub, an antifriction bearing between the support and the inner hub flange, said inner wheel hub ilange being assembled on the periphery of a race of said bear ing, a brake drum having a hub also assembled on the periphery of said bearing race, and means to secure said inner wheel hub to said brake drum hub, said last-named means comprising driving studs secured to the brake drum hub, passing through the inner wheel hub and provided with nuts on said studs to clamp the outer wheel hub beneath said nuts 'and to said inner wheel hub and brake drum hub and means independent of said driving studs to hold said inner wheel hub and brake drum hub assembled when the Wheel is removed.

2. In combination, a live axle, an axle housing, an inner wheel hub secured to said live axle, an outer Wheel hub, said inner wheel hub having a ange, a bearing having an inner race mounted on said housing, said inner wheel hub flange recessed to engage the periphery of the outer race of said bearing, a brake drum having a hub provided with a recessed portion peripherally engaging said outer bearing race, means extending through said inner wheel hub and brake drum to secure said parts together, and other securing means extending through the said parts and through the outer wheel hub to secure said inner Wheel hub and brake drum to the outer hub portion of the wheel.l

3. In combination, a support, an inner wheel hub having a flange, an outer wheel hub constituting a part of a wheel and removable therewith from said inner wheel hub, an anti-friction bearing between the support and the inner hub ange, said inner wheel hub flange being assembled on the periphery of a race of said bearing, a brake drum having a hub also assembled on the" periphery of said bearing race, and means to secure said inner wheel hub to said brake drum hub, said last-named means comprising driving studs in threaded engagement with the brake drum hub, passing through the inner wheel hub and provided with nuts on said studs to clamp the outer wheel hub beneath said nuts and to said inner wheel hub and brake drum hub.

GUY E. PARKER. 

